1144587901 has 2 divisors, whose sum is σ = 1144587902. Its totient is φ = 1144587900.

The previous prime is 1144587877. The next prime is 1144587907. The reversal of 1144587901 is 1097854411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 600299001 + 544288900 = 24501^2 + 23330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144587901 - 2⁵ = 1144587869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144587907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572293950 + 572293951.

It is an arithmetic number, because the mean of its divisors is an integer number (572293951).

Almost surely, 2^1144587901 is an apocalyptic number.

It is an amenable number.

1144587901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144587901 is an equidigital number, since it uses as much as digits as its factorization.

1144587901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 1144587901 is about 33831.7587630321. The cubic root of 1144587901 is about 1046.0434320433.

The spelling of 1144587901 in words is "one billion, one hundred forty-four million, five hundred eighty-seven thousand, nine hundred one".